Boyfriends dad had suspected titanium poisoning from cage in back for past 2 years that has confused all doctors but now he's throwing up badly every day and shadow has been found on his lung, very worried he hates going to doctors ?

Titanium poisoning?: That's a new "fad" diagnosis and I think it is baloney. The man is seriously sick. With a lung shadow and daily vomiting, he has lung cancer metastatic to the brain until proved otherwise. You and your boyfriend need to drag him in for evaluation by a scientific physician. I'll be thinking of you. Good luck.